10 coolest (mostly interactive) online maps of Philadelphia

This 1838 map of Philadelphia from the Historical Society of Pennsylvania didn't make our list of the 10 best maps of Philadelphia.
We love maps.
For hundreds of years, they have helped us better understand our world. That understanding has grown wildly with time and technology, but, still, maps help.
In a place as inwardly focused, we have plenty of maps in Philadelphia. You also may know that we have something of a technology community here.
So there are resources like the Pennsylvania Spatial Data Access, or PASDA, which offers just a wild glut of GIS shape files for mapping geeks. We’ve seen cool mapping tools that are of broader scope though Philly got some love: from the addition of bicycle directions to Philadelphia Google Maps to the Google Building Maker to mapping the homes of those in the U.S. armed services who died in the Mideast this decade and many more.
But we wanted to highlight the coolest maps made for Philadelphia of Philadelphia.
Taking into account our own map obsessions, suggestions and calling out our community, we took on the task of listing, in no particular order, the 10 best online maps of Philadelphia.



